Patents by Inventor Youjing Duan

Youjing Duan has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Method for evaluating the longitudinal deformation of proppant pack
    Patent number: 10823646
    Abstract: The invention discloses a method for evaluating the longitudinal deformation of proppant pack, mainly comprising the following steps: displace the proppant evenly on one steel sheet and cover the proppant with another same steel sheet; place pistons on the outer surface of two steel sheets respectively to form a test unit; place the test unit on fracture conductivity tester, compact the proppant pack at a pressure of 0.6 MPa, measure the width between the two steel sheets at the four corners of the steel sheet, and calculate the average results; install the left and right displacement meters, increase the closure pressure from 6.9 MPa to 69 MPa with an increment of 6.
    Type: Grant
    Filed: February 28, 2020
    Date of Patent: November 3, 2020
    Assignee: SOUTHWEST PETROLEUM UNIVERSITY
    Inventors: Jianchun Guo, Youjing Duan, Yuxuan Liu, Jiandong Wang, Chi Chen, Dilin Wen